Thanks for the reply Drool, I did an update from dos by creating a dos flash drive and putting the Bios files for version 1.16 and updated without any issue. However 2 updates were performed as I mentioned in my first post. Although my laptop is designed for Win7 the bios update didn't give me SLIC 2.1. (My laptop came with Linux, however other model with same model no. 5740 is available with Win7HP and BIOS to be downloaded is also same). However when I try to open the bios file with PhoenixTool.exe it gives a dialog box after processing the files as "Complete SLIC (2.1) (ACRSYSACRPRDCT ANNI) in ACPI05.ROM (x1)" which make me to believe that the Bios files may contain SLIC 2.1 but somehow the update has been programmed not to update SLIC table when Bios is updated. So I would like to know if anyone can confirm this. Thanks.